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shm wayland window

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Rakarake 2025-12-17 18:46:07 +01:00
parent 27b66bec0a
commit 8f551459fe
4 changed files with 197 additions and 17 deletions
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148
glonkers.c
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@ -7,7 +7,10 @@
#include <wayland-util.h>
#include <SDL3/SDL.h>
#include <pthread.h>
#include <sys/mman.h>
#include "renderer.h"
#include "shm.h"
#include "xdg-shell-protocol.h"
//int main() {
// struct wl_display *display = wl_display_connect(NULL);
@ -22,10 +25,96 @@
//
// wl_display_disconnect(display);
//}
struct our_state {
// ...
struct wl_compositor *compositor;
// ...
struct client_state {
/* Globals */
struct wl_display *wl_display;
struct wl_registry *wl_registry;
struct wl_shm *wl_shm;
struct wl_compositor *wl_compositor;
struct xdg_wm_base *xdg_wm_base;
/* Objects */
struct wl_surface *wl_surface;
struct xdg_surface *xdg_surface;
struct xdg_toplevel *xdg_toplevel;
};
static void
wl_buffer_release(void *data, struct wl_buffer *wl_buffer)
{
/* Sent by the compositor when it's no longer using this buffer */
wl_buffer_destroy(wl_buffer);
}
static const struct wl_buffer_listener wl_buffer_listener = {
.release = wl_buffer_release,
};
static struct wl_buffer *
draw_frame(struct client_state *state)
{
const int width = 640, height = 480;
int stride = width * 4;
int size = stride * height;
int fd = allocate_shm_file(size);
if (fd == -1) {
return NULL;
}
uint32_t *data = mmap(NULL, size,
PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (data == MAP_FAILED) {
close(fd);
return NULL;
}
struct wl_shm_pool *pool = wl_shm_create_pool(state->wl_shm, fd, size);
struct wl_buffer *buffer = wl_shm_pool_create_buffer(pool, 0,
width, height, stride, WL_SHM_FORMAT_XRGB8888);
wl_shm_pool_destroy(pool);
close(fd);
/* Draw checkerboxed background */
for (int y = 0; y < height; ++y) {
for (int x = 0; x < width; ++x) {
if ((x + y / 8 * 8) % 16 < 8)
data[y * width + x] = 0xFF666666;
else
data[y * width + x] = 0xFFEEEEEE;
}
}
munmap(data, size);
wl_buffer_add_listener(buffer, &wl_buffer_listener, NULL);
return buffer;
}
static void
xdg_surface_configure(void *data,
struct xdg_surface *xdg_surface, uint32_t serial)
{
struct client_state *state = data;
xdg_surface_ack_configure(xdg_surface, serial);
struct wl_buffer *buffer = draw_frame(state);
wl_surface_attach(state->wl_surface, buffer, 0, 0);
wl_surface_commit(state->wl_surface);
}
static const struct xdg_surface_listener xdg_surface_listener = {
.configure = xdg_surface_configure,
};
static void
xdg_wm_base_ping(void *data, struct xdg_wm_base *xdg_wm_base, uint32_t serial)
{
xdg_wm_base_pong(xdg_wm_base, serial);
}
static const struct xdg_wm_base_listener xdg_wm_base_listener = {
.ping = xdg_wm_base_ping,
};
static void
@ -35,12 +124,21 @@ registry_handle_global(void *data, struct wl_registry *registry,
printf("interface: '%s', version: %d, name: %d\n",
interface, version, name);
struct our_state *state = data;
struct client_state *state = data;
if (strcmp(interface, wl_compositor_interface.name) == 0) {
state->compositor = wl_registry_bind(
registry, name, &wl_compositor_interface, 4);
if (strcmp(interface, wl_shm_interface.name) == 0) {
state->wl_shm = wl_registry_bind(
registry, name, &wl_shm_interface, 1);
} else if (strcmp(interface, wl_compositor_interface.name) == 0) {
state->wl_compositor = wl_registry_bind(
registry, name, &wl_compositor_interface, 4);
} else if (strcmp(interface, xdg_wm_base_interface.name) == 0) {
state->xdg_wm_base = wl_registry_bind(
registry, name, &xdg_wm_base_interface, 1);
xdg_wm_base_add_listener(state->xdg_wm_base,
&xdg_wm_base_listener, state);
}
}
static void
@ -51,7 +149,7 @@ registry_handle_global_remove(void *data, struct wl_registry *registry,
}
static const struct wl_registry_listener
registry_listener = {
wl_registry_listener = {
.global = registry_handle_global,
.global_remove = registry_handle_global_remove,
};
@ -59,12 +157,32 @@ registry_listener = {
int
main(int argc, char *argv[])
{
struct our_state state = { 0 };
struct wl_display *display = wl_display_connect(NULL);
struct wl_registry *registry = wl_display_get_registry(display);
wl_registry_add_listener(registry, &registry_listener, &state);
wl_display_roundtrip(display);
return 0;
//struct our_state state = { 0 };
//struct wl_display *display = wl_display_connect(NULL);
//struct wl_registry *registry = wl_display_get_registry(display);
//wl_registry_add_listener(registry, &registry_listener, &state);
//wl_display_roundtrip(display);
//return 0;
struct client_state state = { 0 };
state.wl_display = wl_display_connect(NULL);
state.wl_registry = wl_display_get_registry(state.wl_display);
wl_registry_add_listener(state.wl_registry, &wl_registry_listener, &state);
wl_display_roundtrip(state.wl_display);
state.wl_surface = wl_compositor_create_surface(state.wl_compositor);
state.xdg_surface = xdg_wm_base_get_xdg_surface(
state.xdg_wm_base, state.wl_surface);
xdg_surface_add_listener(state.xdg_surface, &xdg_surface_listener, &state);
state.xdg_toplevel = xdg_surface_get_toplevel(state.xdg_surface);
xdg_toplevel_set_title(state.xdg_toplevel, "Example client");
wl_surface_commit(state.wl_surface);
while (wl_display_dispatch(state.wl_display)) {
/* This space deliberately left blank */
}
return 0;
}
//struct timespec program_start;